2026 NPPES data Allergy Physician NPI 1003878943 MD
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HARISH KOTHARI, MD

Allergy Physician in SOUTH PLAINFIELD, New Jersey. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
169
Medicare Part D claims · 51 beneficiaries · Allergy Physician avg: 755
Generic prescribing
82%
generic claims · 18% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: HARISH KOTHARI, MD is a Allergy Physician ([object Object]) practicing in SOUTH PLAINFIELD, New Jersey with a Medicare Part D prescribing footprint of 169 claims across 51 beneficiaries — 18% brand-name prescribing .

What stands out: HARISH KOTHARI, MD filed 169 Medicare Part D claims in 2023 across SOUTH PLAINFIELD, New Jersey. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

HARISH KOTHARI, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

HARISH KOTHARI, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/05/2006

NPI 1003878943

Primary specialty

Allergy Physician

Niche

1,019 US NPIs in this specialty

Medicare Part D claims

169 78% vs specialty avg

2023 prescription claims

Specialty avg: 755

Specialty distribution in New Jersey

How Allergy Physician compares to other specialties among New Jersey providers

New Jersey providers

Allergy Physician share within New Jersey

1. Allergy Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy Physician share within New Jersey

Specialty board-certification context

Estimated specialty board-certified rate — Allergy Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Allergy Physician ABMS/AOA estimate

Est. board-certified rate (Allergy Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy Physician) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

HARISH KOTHARI, MD is a Allergy Physician provider practicing in SOUTH PLAINFIELD, New Jersey, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1003878943. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

HARISH KOTHARI, MD appears in the CMS NPPES registry as a Allergy Physician provider holding MD credentials at 906 OAK TREE ROAD, SOUTH PLAINFIELD, NJ, 07080, with a listed phone of (908) 412-6588. NPI 1003878943 was issued on 04/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KOTHARI most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 169 prescription claims written by this provider, covering 51 Medicare beneficiaries and totaling roughly $26K in drug spend, split 18% brand-name and 82% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Allergy Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

906 OAK TREE ROAD
SOUTH PLAINFIELD, NJ 07080

Provider Details

NPI 1003878943
Specialty Allergy Physician
Credentials MD
Gender Male
NPI Issued 04/05/2006

Brand vs generic prescribing mix · Typical

HARISH KOTHARI, MD — brand share 18.0%
Specialty average (est.)

18% brand-name claims vs 82% generic, on 169 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

169
Total Claims
$26K
Total Drug Cost
51
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
221
Total Day Supply
5,660
Brand vs Generic
18% brand / 82% generic
Brand Drug Cost
$23K
Generic Drug Cost
$3K
Antibiotic Claims
20

Patient Demographics

Average Patient Age
68.8 years
Avg HCC Risk Score
0.92
Gender Split
55% female / 45% male

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
26
Azithromycin
17
Montelukast Sodium
17
Azelastine Hcl
14
Mometasone Furoate
14
Omeprazole
14

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Allergy Physician Overview

How HARISH KOTHARI, MD fits within the Allergy Physician landscape nationally.

1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider

HARISH KOTHARI, MD's 169 claims are below the specialty average of 755.

Nearby Allergy Physician Providers in New Jersey

Other clinicians with the same primary specialty enrolled in New Jersey, drawn from the same CMS NPPES roster as KOTHARI.

Compare Allergy Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HARISH KOTHARI, MD's specialty?
HARISH KOTHARI, MD specializes in Allergy Physician and practices in SOUTH PLAINFIELD, New Jersey. Credentials: MD.
How much does HARISH KOTHARI, MD prescribe under Medicare Part D?
In 2023, HARISH KOTHARI, MD wrote 169 Medicare Part D claims totaling $26K in drug costs for 51 beneficiaries.
Where is HARISH KOTHARI, MD located?
HARISH KOTHARI, MD is located at 906 OAK TREE ROAD, SOUTH PLAINFIELD, NJ, 07080. Phone: (908) 412-6588.
What is HARISH KOTHARI, MD's NPI number?
HARISH KOTHARI, MD's National Provider Identifier (NPI) is 1003878943, issued on 04/05/2006.
Does HARISH KOTHARI, MD prescribe more brand-name or generic drugs?
HARISH KOTHARI, MD's prescribing is 18% brand-name and 82% generic drugs by claim count, with $23K in brand drug costs.
How many Allergy Physician providers are there in the US?
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does HARISH KOTHARI, MD prescribe most often?
Based on 2023 Medicare Part D data, HARISH KOTHARI, MD's most frequently prescribed drugs include Trelegy Ellipta, Azithromycin, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HARISH KOTHARI, MD accept Medicare?
HARISH KOTHARI, MD appears in CMS Medicare data with 169 Part D claims and 51 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HARISH KOTHARI, MD's credentials?
HARISH KOTHARI, MD's NPI is 1003878943 with credentials MD. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology